After upgrading from 16.04 to 18.04 (keeping my home folder) Thunar looks like this in an i3 session:

enter image description here

Apparently some icons are missing, but what do I have to install?

Note that the accepted answer of this older question is obsolete since package gnome-icon-theme-full does not exist anymore. xfce4-settings-helper doesn't seem to exist anymore, either.


The approach from hrzhu's answer still works:

  • Install lxappearance.
  • Run it and pick a working icon theme.
    Note how the default, Adwaita, seems to be broken.
  • Restart Thunar.

enter image description here

  • same problem happened to me with icewm over ubuntu 18.04, lxappearance helped – exebook Jul 24 '18 at 8:01
  • 1
    this even sets correct icons for nautilus, which gnome-tweak-tool was unable to (in i3) – Ayush Jun 15 '20 at 18:27

I provided the same answer earlier for a similar question, with i3 on Xubuntu 18.04 this worked for me:

  1. Create/modify the file .gtkrc-2.0 in your home directory
  2. Add/edit the line gtk-icon-theme-name="gnome", change gnome to your desired icon theme.

This can be done by executing echo "gtk-icon-theme-name=\"gnome\"" >> ~/.gtkrc-2.0 in your terminal.

Credit: https://www.linuxquestions.org/questions/slackware-14/no-icons-in-thunar-when-running-out-of-xfce-4175469261/#post4988339

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